flashproxy-client: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/flashproxy-client - from package: flashproxy-client

You may install the required package with command apt-get install {package}

Error in other languages:
flashproxy-client: bevel nie gevind nie
flashproxy-client: comandă negăsită
flashproxy-client: comando não encontrado
flashproxy-client: commande introuvable
flashproxy-client: command not found
flashproxy-client: käsku ei ole
flashproxy-client: không tìm thấy lệnh
flashproxy-client: komanda nerasta
flashproxy-client: Kommando nicht gefunden.
flashproxy-client: kommandot finns inte
flashproxy-client: komut yok
flashproxy-client: nie znaleziono polecenia
flashproxy-client: níor aimsíodh an t-ordú
flashproxy-client: no se encontró la orden
flashproxy-client: no s'ha trobat l'ordre
flashproxy-client: opdracht niet gevonden
flashproxy-client: parancs nem található
flashproxy-client: perintah tidak ditemukan
flashproxy-client: príkaz nenájdený
flashproxy-client: příkaz nenalezen
flashproxy-client: команда не найдена
flashproxy-client: командата не е открита
flashproxy-client: 命令找不到
flashproxy-client: コマンドが見つかりません